St Charles Weather Forecast

    • 34
    • 48

    Increasing Clouds

    • 32
    • 58

    Partly Sunny

    • 34
    • 50

    Mostly Cloudy

    • 37
    • 56

    Mostly Cloudy

    • 28
    • 61

    Mostly Cloudy

    • 30
    • 46

    Mostly Cloudy

Today 21 Dec Cuming

Mostly sunny. Highs in the upper 40s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 21 Dec Cuming

Mostly cloudy in the Evening, then becoming partly cloudy. Not as cool with Lows in the mid 30s. South Winds 15 to 20 Mph.

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  • Temperature Real-Time

St Charles Temperature Statistics

December Temperature

Fremont Municipal Airport (26.1 miles)

  • Lowest 4 December, 2025

    -1.1 °F

  • Average December

    27.2 °F

  • Highest 16 December, 2025

    54.7 °F

Climate (2020–Present)

Fremont Municipal Airport (26.1 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    64.5 °F
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